2 you have to seat the tongues and grooves together and they don t always want to marry.
How to seal tongue and groove in attic.
I would do blown cellulose but my lady didn t like the dust factor when blowing just the air sealing alone lowered my heating bill this past winter with only half the house insulated to r 15.
Most latex polyurethanes are thin and somewhat milky but will dry to a crystal clear finish.
A paint pad cuts out bubbles and allows you to spread the polyurethane evenly and quickly so it s the recommended tool.
1 you re usually working over your head.
Fwiw i just removed all the insulation r 3 to r 6 in my attic air sealed and am re insulating with rock wool batts.
Place the first sheet of flooring against the attic wall and check for square.
Begin laying the tongue and groove chipboard in the furthest corner from the attic access.
When we removed the old ceiling tiles we found tongue and groove boards but the years have left gaps of up to a half inch between them.
Using an acrylic latex polyurethane you can seal your tongue and groove pine paneling with a foam paint roller brush or paint pad.
How do we seal up the gaps so insulation dust and bugs don t drop into the living areas.
3 tongue and groove isn t always flat so you have to force the boards together to get them seated.
The boards also are visible from the attic.
We had wood particles and dust falling from our tongue and groove ceiling due to some widened gaps.
We want to add recessed lights in the ceiling and insulation in the attic.